29 lines
1.2 KiB
LLVM
29 lines
1.2 KiB
LLVM
; RUN: opt -basic-aa -loop-idiom < %s -S | FileCheck %s
|
|
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
|
|
|
|
;; memcpy.atomic formation (atomic load & store) -- element size 2
|
|
;; Will not create call due to a max element size of 0
|
|
define void @test1(i64 %Size) nounwind ssp {
|
|
; CHECK-LABEL: @test1(
|
|
; CHECK-NOT: call void @llvm.memcpy.element.unordered.atomic
|
|
; CHECK: store
|
|
; CHECK: ret void
|
|
bb.nph:
|
|
%Base = alloca i16, i32 10000
|
|
%Dest = alloca i16, i32 10000
|
|
br label %for.body
|
|
|
|
for.body: ; preds = %bb.nph, %for.body
|
|
%indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ]
|
|
%I.0.014 = getelementptr i16, i16* %Base, i64 %indvar
|
|
%DestI = getelementptr i16, i16* %Dest, i64 %indvar
|
|
%V = load atomic i16, i16* %I.0.014 unordered, align 2
|
|
store atomic i16 %V, i16* %DestI unordered, align 2
|
|
%indvar.next = add i64 %indvar, 1
|
|
%exitcond = icmp eq i64 %indvar.next, %Size
|
|
br i1 %exitcond, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
ret void
|
|
}
|